硅酸盐水泥基复合电解质的制备及其在建筑储能器件中的应用

摘要/Abstract

摘要： 近几年,将水泥基复合材料用于建筑储能已成为研究热点之一。本文将硅酸盐水泥、丙烯酰胺(AM)混合制备了一种优化的水泥基复合结构电解质,并研究了AM质量分数分别为0%、25.0%、27.5%、30.0%、32.5%和35.0%时对结构电解质的离子电导率、力学性能及微观结构的影响。研究结果表明,增加AM的掺量有助于提高硅酸盐水泥基复合电解质的离子电导率,同时会不可避免地降低电解质的抗压强度。当AM掺量为30.0%时,可以使离子电导率和抗压强度达到理想平衡,抗压强度高达41.1 MPa,离子电导率最大为22.47 mS·cm^-1。此外,对结构电解质与还原氧化石墨烯(rGO)电极组装成一体式的结构超级电容器进行了一系列电化学性能测试,发现AM掺量为30.0%的硅酸盐水泥基复合电解质构成的结构超级电容器的面积比电容最大可以达到96.8 mF·cm^-2。在恒定电流为0.1 mA·cm^-2下充放电循环5 000次后,该结构超级电容器的面积比电容值保持率为91.08%,该结构超级电容器在建筑储能领域具有广阔的应用前景。

关键词: 硅酸盐水泥电解质, 丙烯酰胺, 结构超级电容器, 抗压强度, 电化学

Abstract: In recent years, it is interesting that cement based composites can be used for building energy storage. In this paper, a kind of optimized cement based composite electrolyte was prepared by mixing Portland cement and acrylamide (AM). The effects of AM mass fraction of 0%, 25.0%, 27.5%, 30.0%, 32.5% and 35.0% on the ionic conductivity, mechanical properties and microstructure of the structural electrolyte were investigated. The multifunctional analysis shows that the increase of AM content is helpful to improve the ionic conductivity of Portland cement based composite electrolyte, but it inevitably reduces the compressive strength of electrolyte. When AM content is 30.0%, the ionic conductivity and compressive strength the Portland cement based composite electrolyte reach an ideal balance. At this time, the compressive strength is as high as 41.1 MPa, and the ionic conductivity is up to 22.47 mS·cm^-1. In addition, integrated structural supercapacitors were assembled with these structural electrolytes sandwiched by rGO electrodes, and a series of electrochemical performance tests were carried out. It is found that the maximum area specific capacitance of the structure supercapacitor based on Portland cement based composite electrolyte with AM content of 30.0% can reach 96.8 mF·cm^-2. In addition, its area capacitance retention rate keeps 91.08% after 5 000 charge-discharge cycles at a current density of 0.1 mA·cm^-2, indicating that the structural supercapacitor has a broad prospect in the field of building energy storage application.

Key words: Portland cement electrolyte, acrylamide, structural supercapacitor, compressive strength, electrochemistry

中图分类号:

TU528

袁学锋, 王花. 硅酸盐水泥基复合电解质的制备及其在建筑储能器件中的应用[J]. 硅酸盐通报, 2021, 40(12): 3938-3944.

YUAN Xuefeng, WANG Hua. Preparation of Portland Cement Based Composite Electrolyte and Its Application in Building Energy Storage Devices[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(12): 3938-3944.

参考文献

[1] KHARE V, NEMA S, BAREDAR P. Solar-wind hybrid renewable energy system: a review[J]. Renewable and Sustainable Energy Reviews, 2016, 58: 23-33.
[2] BENEDEK J, SEBESTYN T T, BARTK B. Evaluation of renewable energy sources in peripheral areas and renewable energy-based rural development[J]. Renewable and Sustainable Energy Reviews, 2018, 90: 516-535.
[3] RAHMAN A, SRIKUMAR V, SMITH A D. Predicting electricity consumption for commercial and residential buildings using deep recurrent neural networks[J]. Applied Energy, 2018, 212: 372-385.
[4] HUO T F, REN H, ZHANG X L, et al. China’s energy consumption in the building sector: a statistical yearbook-energy balance sheet based splitting method[J]. Journal of Cleaner Production, 2018, 185: 665-679.
[5] 余林峰,陈晋,丁冬海,等.类石墨烯材料在能量储存转换领域的应用[J].硅酸盐通报,2015,34(1):156-163.
YU L F, CHEN J, DING D H, et al. Applications of graphene-like materials in the field of energy storage and conversion[J]. Bulletin of the Chinese Ceramic Society, 2015, 34(1): 156-163 (in Chinese).
[6] HUANG Y, ZHU M S, HUANG Y, et al. Multifunctional energy storage and conversion devices[J]. Advanced Materials, 2016, 28(38): 8344-8364.
[7] SHIRSHOVA N, QIAN H, SHAFFER M S P, et al. Structural composite supercapacitors[J]. Composites Part A: Applied Science and Manufacturing, 2013, 46: 96-107.
[8] MENG C Z, MURALIDHARAN N, TEBLUM E, et al. Multifunctional structural ultrabattery composite[J]. Nano Letters, 2018, 18(12): 7761-7768.
[9] BI Z J, LI X M, CHEN Y B, et al. Large-scale multifunctional electrochromic-energy storage device based on tungsten trioxide monohydrate nanosheets and Prussian white[J]. ACS Applied Materials & Interfaces, 2017, 9(35): 29872-29880.
[10] 黄国集,张红,王宏志,等.透明超级电容器电极的制备及其电化学性能研究[J].硅酸盐通报,2015,34(2):405-408+427.
HUANG G J, ZHANG H, WANG H Z, et al. Preparation of transparent supercapacitor electrodes and research on its electrochemical capacitive behaviors[J]. Bulletin of the Chinese Ceramic Society, 2015, 34(2): 405-408+427 (in Chinese).
[11] JAVAID A, HO K, BISMARCK A, et al. Carbon fibre-reinforced poly(ethylene glycol) diglycidylether based multifunctional structural supercapacitor composites for electrical energy storage applications[J]. Journal of Composite Materials, 2016, 50(16): 2155-2163.
[12] 季鸣童,郑伟超.水热法制备氮掺杂石墨烯水凝胶及其超电容性能研究[J].硅酸盐通报,2020,39(2):643-648.
JI M T, ZHENG W C. Research on preparation of nitrogen-doped graphene hydrogel by hydrothermal method and its supercapacitive performance[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(2): 643-648 (in Chinese).
[13] LOPEZ J, SUN Y M, MACKANIC D G, et al. A dual-crosslinking design for resilient lithium-ion conductors[J]. Advanced Materials, 2018, 30(43): 1804142.
[14] CHOUDHURY S, TU Z, NIJAMUDHEEN A, et al. Stabilizing polymer electrolytes in high-voltage lithium batteries[J]. Nature Communications, 2019, 10(1): 3091.
[15] XU J M, ZHANG D. Multifunctional structural supercapacitor based on graphene and geopolymer[J]. Electrochimica Acta, 2017, 224: 105-112.
[16] MA W Y, ZHANG D. Multifunctional structural supercapacitor based on graphene and magnesium phosphate cement[J]. Journal of Composite Materials, 2019, 53(6): 719-730.
[17] REN W W, CAO L, ZHANG D. Composite phase change material based on reduced graphene oxide/expanded graphite aerogel with improved thermal properties and shape-stability[J]. International Journal of Energy Research, 2020, 44(1): 242-256.
[18] QIN L, GAO X J, LI Q Y. Upcycling carbon dioxide to improve mechanical strength of Portland cement[J]. Journal of Cleaner Production, 2018, 196: 726-738.